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What is a NSN (Nato Stock Number) gauge?


An NSN number, also known as National Stock Number or NATO Stock Number, is a 13 digit numeric code for identifying standardised material items. They are recognised by all NATO Countries and the US Department of Defense. Most commonly used for Procurement, Stocking, Locating and Monitoring items, an item having an NSN is known to be "stock-listed".

Pursuant to the NATO Standardisation Agreements, the NSN has come to be used in all treaty countries. However, many countries that use the NSN program are not members of NATO, e.g. Japan, Australia and New Zealand. A two-digit Material Management Aggregation Code (MMAC) suffix may also be appended to denote asset end use, but it is not considered part of the NSN. In the United Kingdom, it is known as a Domestic Management Code (DMC)

Click here to read the full Wikipedia Article


Since Rototherm Group acquired Sydney Smith Dennis 25 years ago, we have continued to be the manufacturer of choice for Defence Standard gauges NATO-Stock-Numbers (NSN) gauges" across the world, thanks to being Ministry of Defence (MOD) approved. 

These high quality gauges have provided reliable service to withstand harsh environments and are considered the gauge of choice for the Royal Navy amongst many others. Our Def Stan 66-2 gauges are manufactured in accordance with EN837-1 and have been supplied for Naval and Marine applications for more than 50 years.

Only approved companies can supply to the MOD and Rototherm's Defence Gauges are manufactured in the UK in strict accordance to defence industry standards. MOD requirements include rigorous testing, material selection and certfication to validate performance, vibration, shock and endurance standards. 

 Industrial Bimetallic Thermometer

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